package cn.icast.netty.c3;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import lombok.extern.slf4j.Slf4j;

import java.nio.charset.Charset;

@Slf4j
public class EventLoopServer {
    public static void main(String[] args) {

        //细分2：创建一个独立的EventLoopGroup  不处理IO任务，遇到哪个Handler耗时比较长时用
      EventLoopGroup group=new DefaultEventLoopGroup();

        new ServerBootstrap()
                //boss 和 worker
                //第一个group的参数boss只负责ServerSocketChannel上的accept事件，第二个参数 worker只负责socketChannel的读写事件
                .group(new NioEventLoopGroup(),new NioEventLoopGroup(2))
                .channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<NioSocketChannel>() {

                    @Override
                    protected void initChannel(NioSocketChannel ch) throws Exception {
                     //   ch.pipeline().addLast(new StringDecoder());//将ByteBuf转换字符串

                        ch.pipeline().addLast("handler1",new ChannelInboundHandlerAdapter(){

                            @Override  //ByteBuf
                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {


                                ByteBuf buf = (ByteBuf) msg;

                                log.debug(buf.toString(Charset.defaultCharset()));
                                ctx.fireChannelRead(msg);//将消息传递给下一个handler
                            }
                        }).addLast(group,"handler2",new ChannelInboundHandlerAdapter(){
                            @Override  //ByteBuf
                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {


                                ByteBuf buf = (ByteBuf) msg;

                                log.debug(buf.toString(Charset.defaultCharset()));
                            }

                            });

                    }


                }).bind(8080);
    }
}
